Personally I'd move on. Yes, just like that. If it was meaningless enough to her, devote no further meaning to what was. Celebrate, and find someone else if you're starting to feel lonely. Life's too damn short to wallow in selfpity or grief. And clinging to something that was obviously an illusion will just compound the problem.
[Edit] Spazzy's suggestion could be a nice short-term fix too.
Wide awake in a world that sleeps, enduring thoughts, enduring scenes. The knowledge of what is yet to come.
From a time when all seems lost, from a dead man to a world, without restraint, unafraid and free.
Mostly retired Discovery member. May still visit from time to time.